SOLUTION: 1st question) marks dad is 3 times as old as mark . The sum of their ages is 48 , how old is mark? most importantly i need the expression (: thankyouu 2nd question. ) bilal

Question 536204: 1st question) marks dad is 3 times as old as mark . The sum of their ages is 48 , how old is mark?
most importantly i need the expression (: thankyouu
2nd question. )
bilal sister is 3 years younger than bilal , bilal's mother is 3 times than bilal's age , bilal's father is 4 years old then bilal's mother , the sum of all ages is 89 , how old was bilal's mother when he was born?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = Dad's age
Let = Mark's age
given:
(1)
(2)
---------
Substitute (2) into (1)
(1)
(1)
(1)
and,
(2)
(2)
Dad is 36 and Mark is 12
--------------------
Let = Bilal's age now
Let = Bilal's Sister's age now
Let = Mother's age now
Let = Father's age now
given:
(1)

(2)
(3)
How old was bilal's mother when he was born?
This is the same as " What is ?"
(2)

and
(1)
(1)
(1)
(1)

His mother was 24 and 3 months old
Hope I got it
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